body {
  margin: 0;
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: #f0f2f5;
}

.upload-container {
  width: 100%;
  max-width: 600px;
  padding: 20px;
}

.upload-area {
  border: 2px dashed #2196f3;
  border-radius: 8px;
  padding: 40px;
  text-align: center;
  background-color: #fff;
  cursor: pointer;
  transition: border-color 0.3s ease;
}

.upload-area.dragover {
  border-color: #1976d2;
  background-color: #e3f2fd;
}

.upload-content {
  color: #666;
}

#uploadButton {
  background-color: #2196f3;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  margin-top: 10px;
  transition: background-color 0.3s ease;
}

#uploadButton:hover {
  background-color: #1976d2;
}

#uploadStatus {
  margin-top: 20px;
  padding: 10px;
  border-radius: 4px;
  text-align: center;
}

.success {
  background-color: #e8f5e9;
  color: #2e7d32;
}

.error {
  background-color: #ffebee;
  color: #c62828;
}

.progress-bar {
  width: 100%;
  height: 20px;
  background-color: #f0f0f0;
  border-radius: 10px;
  margin-top: 20px;
}

.progress {
  height: 100%;
  background-color: #2196f3;
  border-radius: 10px;
  width: 0%;
  transition: width 0.3s ease;
}